| 摘要 |
PURPOSE:To make the thermal displacement at the bottom dead point position of a slider as near as zero by constituting toggle links of a metallic material having the coefft. of linear expansion smaller than the coefft. of linear expansion of a connecting rod constituting a crank driving mechanism. CONSTITUTION:The respective links constituting a toggle link mechanism 2, in a knuckle press consisting of crank driving mechanism 5, the toggle link mechanism 2 connected to the mechanism 5, and a slider 9 which is connected to the mechaism 2 and is vertically driven by the same, are constituted of a metallic material having the coefft. of linear expansion smaller than the coefft. of linear expansion of the connecting rod 6 in the mechanism 5. |
